ModuleNotFoundError: No module named 'cgi' when pip install

[setop]

Hi,

I tried to pull web.py==0.62 but I get ModuleNotFoundError: No module named 'cgi' error. As a result, webpy is not available.

Details

$ . .venv/bin/activate

(.venv) $ pip install -r requirements.txt 

Collecting web.py==0.62 (from -r requirements.txt (line 1))
 Downloading web.py-0.62.tar.gz (623 kB)
 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 623.2/623.2 kB 6.8 MB/s 0:00:00
 Installing build dependencies ... done
 Getting requirements to build wheel ... error
 error: subprocess-exited-with-error
 
 × Getting requirements to build wheel did not run successfully.
 │ exit code: 1
 ╰─> [33 lines of output]
 /tmp/pip-install-muga9tpt/web-py_46e74015e962407996b7285af05ce67c/web/debugerror.py:96: SyntaxWarning: invalid escape sequence '\-'
 strClassName = strClassName.replace(/\-/g, "\\-");
 Traceback (most recent call last):
 File "/home/mrloyal/Documents/imgproxy/.venv/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
 main()
 ~~~~^^
 File "/home/mrloyal/Documents/imgproxy/.venv/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
 json_out["return_val"] = hook(**hook_input["kwargs"])
 ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
 File "/home/mrloyal/Documents/imgproxy/.venv/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
 return hook(config_settings)
 File "/tmp/pip-build-env-n856824x/overlay/lib/python3.13/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
 return self._get_build_requires(config_settings, requirements=[])
 ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/tmp/pip-build-env-n856824x/overlay/lib/python3.13/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
 self.run_setup()
 ~~~~~~~~~~~~~~^^
 File "/tmp/pip-build-env-n856824x/overlay/lib/python3.13/site-packages/setuptools/build_meta.py", line 520, in run_setup
 super().run_setup(setup_script=setup_script)
 ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/tmp/pip-build-env-n856824x/overlay/lib/python3.13/site-packages/setuptools/build_meta.py", line 317, in run_setup
 exec(code, locals())
 ~~~~^^^^^^^^^^^^^^^^
 File "<string>", line 7, in <module>
 File "/tmp/pip-install-muga9tpt/web-py_46e74015e962407996b7285af05ce67c/web/__init__.py", line 4, in <module>
 from . import ( # noqa: F401
 ...<11 lines>...
 )
 File "/tmp/pip-install-muga9tpt/web-py_46e74015e962407996b7285af05ce67c/web/debugerror.py", line 19, in <module>
 from . import webapi as web
 File "/tmp/pip-install-muga9tpt/web-py_46e74015e962407996b7285af05ce67c/web/webapi.py", line 6, in <module>
 import cgi
 ModuleNotFoundError: No module named 'cgi'
 [end of output]
 
 note: This error originates from a subprocess, and is likely not a problem with pip.

[notice] A new release of pip is available: 25.3 -> 26.0.1
[notice] To update, run: pip install --upgrade pip
ERROR: Failed to build 'web.py' when getting requirements to build wheel

[setop]

searxing a bit, it seems due to an incompatibility between python 3.13 and cgi module.
so I rolled back to python 3.12 for a moment.